2C: Cell Size and Shape

ovum (pl. ova)

a fully mature female egg cell which, when fertilised, can divide and give rise to an embryo

red blood cells

cells that transport oxygen through the bloodstream and do not contain a nucleus

volume

the amount of space inside an object. Measured in (units of length)3 (i.e. mm3 , cm3 , m3 )

surface area

a the sum of the area of all exposed sides of a three-dimensional shape. Measured in (units of length)2 (i.e. mm2 , cm2 , m2 )

ratio

a comparison between two things to show proportions

surface area : volume ratio (SA:V)

a comparison of the amount of surface area per unit of volume. In Biology, SA:V influences temperature regulation, and a high SA:V leads to more effective transport into and out of cells